Pipe coupling



H25. 23, 1954 P. F. DRAGON 2,670,222

' PIPE COUPLING Filed Dec. 12. 1949 INVENTOR.

' Pe/er F 0/390 Patented Feb. 23, 1954 UNITED STATES PATENT OFFICE 2,670,222 PIPE COUPLING Peter F. Dragon, Oakland, Calif. Application December 12, 1949, Serial No. 132.501

' 3 Claims. (01. 2s5 175) .to facilitate such shifting, comparatively short lengths of pipe are used and it is obvious that such pipes must be provided with quickly detachable couplings. In addition, the couplings should provide sufficient flexibility in the line to permit a simple and quick manner.

A further object of this invention is to provide a coupling which may be coupled and uncoupled with the least eifort and skill.

Other objects and advantages will appear from the following specification taken in conjunction with the accompanying drawing in which:

Figure 1 is a cross-sectional side elevational view of my coupling;

Figure 2 is a cross-sectional view taken along the line 22 of Figure 1; and

Figure 3 is a cross-sectional detail taken along the line 3-3 of Figure 1. As shown in Figure .1,

pipe I I and I2 and may,

a sprinkler (not shown).

As illustrated in Figure 1, housing I 0 com-,

prises a hollow member allow easy insertion of the ends of the pipes II and I2 therethrough. It will be noted, however,

pipe II for transportation as a unit about a field.

The opening l6 which is adapted toaccommodate the pipe [2,

terrain or direction.

Immediately adjacent the openings l4 and I6, the housing I0 is provided with a pair of annular recesses l1 and I8 respectively which form seats for gaskets I 9 and 2|. The gaskets I S and 2! with the housing It. 1 1

As illustrated, the housing I 0 is provided with .a threaded orifice flwhich is adapted to accomplug may be inserted therein.

At that end of the housing I which is adapted to receive the pipe H (and to which the pipe is more or less permanently secured) there is is further procircumferential length having a center coincident with the center of pipe H. The slot 21 is of suflicient size to receive 2. lug 3| upon the split ring 32 which is secured to the pipe H as by means of a nut and bolt combination 33, which when tightened will serve to increase the frictional engagement between the split ring 32 and the pipe H. Since the orifice I4 is only slightly larger than the outside diameter of the pipe ll,, there will not be sufiicient or loeseness between the housing and the pipe II to permit the lug 31 to be removed from the slot 21 when once the lug M has been inserted in slot 21 and the split ring 32 has been secured to the pipe i I. In practice, the method of coupling the housing 40 to the pipe ll consists in first inserting the gasket T9 in the annular recess ll. mhesplitrm'g is then positioned adjacent the opening l4 with-the lug 31 inserted in the slot 2L Pipe H is then passed through the split ring 32and the opening l4 into engagement with the gasket it! inthe housing 10, substantially as shown in Figure "1. The split ring 32 is then tightened about the pipe 11.

The end of the housing 1'0 "adiacentthe opening It is "likewise provided "with a "member '36. Member 36 serves "as a support for the end of housing 10 remote from member 23 and, as shown particularly fin'Figure 3, is provided with an outwardly extending Toot member 31 which is of sufficient length to provide a support against rotation of "the entire assembly with respect to the ground upon which the assembly is laid.

The member "3 6 is provided withan open-ended slot 3 8jhaving a center which'is coincident with the center of thepipe 12 as shown in 'ligure 3. "The open-ended slot 33 is adapted "to "receive a lug 39 upon a split ring '4! which'is adapted to be secured to the pipe 12. The split ring '4'! is adapted to be drawn together by the nut and bolt combination 42, to frictional-1y engage the pipe l2 and, to all intents and purposes, become a part thereof. The pipe 12 is inserted into "the housing It! simply by introducing the end of the pipe i2 through the orifice I 6 in such 'a manner that it engages the gasket 21 substantially as shown. The pipe "12 is twisted about its longitudina'l axis in such a manner that the lug 39 clears the "end of themember 3B. Thepipe I2 is then rotated so that the lug '39 enters the 'openended slot '38.

'Ihesplit rings 4%! and-32 are substantially identicell. The lugs 31 and 33 on both the rings 32 and 4l are provided with identical lips '43 which are adapted to fit in identical recesses 44 in the of the slots "-21 and 3-8 respectively. When the lips l3 engage the recesses 44, it is obvious that rotation of the pipes ii and 12 with respect to the coupling body it is prevented.

When "the pipes H and 42 are connected to a source of water under pressure the iollowmg occurs: The water pressure is exerted against the lips 22 and 23 of "the gaskets l5 and 2i respectively. The lips 22 and 23 urged into engagement with the pipes "ll and l2 and provide a waterproof seal between the-gasket and the pipe. Pressure against the lips 22 and 23 serves to urge the gaskets I9 and '21 into engagement with the recesses 11 and 18 respectively and to prevent leakage between the gaskets and the housing It. In addition, pressure within the housing ID will tend to urge'the pipes H and i2 apart. This results in urgin'g'the lugs 31 and 39 outwardly against ens walls ot'thef slots-2! and 33, with the stilt that *iur tlier separation of the pipes =Il 1:2 prevented. however,

action of the split ring 4| when the lug 39 engages the outer wall of the slot 38, there will occur a jamming or camming about the point of enthe lug 39 and the wall of the slot increase the frictional engagement between the ring 4| and the pipe 12 and will serve further to prevent the pipe 12 from being removed from both the ring 4| and the housing 40.

Previously it have indicated herein that the pipe 12 is particularly adapted to be inserted within the housing 10 by inserting the same through the opening 16 in such a manner that the ":lug 39 is introduced into the open-ended slot 38 by rotating the pipe l2 about its longitudinal axis. However, it will be noted that the face 48 :of who ilugSB fslopes sharply. When the pipe [2 is inserted in the housing I0 through the orifice It with the log 39 extending downwardly, the surface 48 engages the outer end 49 of the memher 33. The -'sloping-surface 48 will "cause the lug as to ride *upwardly and ever the end "wall of the member 36. When the lug '39 has ridden completely over the end wall of the member 2%, the lug 39 will drop downwardly into the slot-'38.

Gperation oi the device may brieiiy be described as follows": The split ring -'32 is placed adjacent the housing ii!) m such a manner that "the log 31 thereon rests in the slot 21. .Ehe pipe 4 is then passed through the split ring 32 and the evil-ice 14 so "that it engages the lips '22 of the gasket-i7. fiThe split ring B2 is then tightened upon pipe H. In this'manner the pipe l is substantially permaner-itly secured to thehousing 10 until the nut and bolt combination 33 is loosened in order that the split ring 32 no longer frictionally engages the pipe -'I L.

The split ring 4 1 is secured to the pipe I? suffieien'tiy "far Efrem the end thereof that the end may be passed through the orifice 4 6 and into the housing "f8 substantially to the distance shown Figure 1. The'pipe 12 may be "inserted in the housing It! in orrent two manners. The first manner is that in which the pipe i2 is rotated about its longitudinal ants sufiicieritly tan that *2, lug 39 on the split ring 4d will clear the ends of the member 36 when the and of the pipe 2 is introduced through the orifice 1'5 into the housing sit to engage the gasket 12']. The pipe 12 is then rotated about its' longitud-rnal axis until the iug $39 is received within the open-end- -ed.:slot38 and the lip 43 is in substantial registry with the recess #4.

The second manner or introducing the pipe 12 into the housing 10 is to first insert the end of the pipe l2 into the orifice 4-8 with the pipe I2 positioned in such a manner that the tag 39 on the split ring 4! extends downwardly. The fiat surface 48 engages the point 49 on the unember 36 and, when the pipe 12 is moved longitudinally toward the housing it, the lug '39 sides over the member 36 until the h1g3?! (drops downwardiy into the slot (3.8.

When water is-introduced through the pipes Li and 42., the pressure of the water serves to urge the lips 22 and 2-3 on the gaskets i9 and .21 respectively into engagement ith the pipes and the interior of the housing, thereby creating a leakproof seal between the gasket and the housing and the pipes. As has previously been explained, the pressure likewise tends to urge the pipes 11 and :12- apart. However, such movement is'iimit'edthe engagement of the .ing's iii-rand 33 the ht the slots '21 and oi the pipes H and I2 is gagement of 38. This will desired, the water pressure within the tank will, in all probability, have been reduced. The pipe [2 is then rotated so that the lug 39 clears the open-ended slot 38. The pipe i 2 may then be withdrawn from the housing H0. The pipes may then be moved to a new location and be assembled as has previously been explained.

I claim:

1. In a pipe coupling, a body, a flow passage through said body, an opening in one end of said body adapted to receive one end of an irrigation pipe, said opening having a substantially larger diameter than the outer diameter of the pipe connected thereto, an annular recess in said body adjacent said opening adapted to accommodate a gasket, a gasket in said recess adapted to engage one end of said pipe, a ground engaging base formed on said body adjacent said opening and extending longitudinally of the body, said base being formed to provide an arcuate open-ended slot having a center coincident with the center of the adjacent pipe, a clamp ring adapted to be secured to said adjacent end of the pipe, a lug on said clamp ring which by turning of the pipe is adapted to be positioned in said slot to lock the pipe against longitudinal movement, a recess formed in said base, said recess being in communication with said slot and facing said opening in said body, a lip formed on said lug and adapted to engage said recess to lock the pipe against rotational movement.

2. In a pipe coupling, a body, a flow passage through said body, an opening in one end of said body adapted to receive one end of an irrigation pipe, said opening having a slightly larger diameter than the outer diameter of the pipe connected thereto, an annular recess in said body adjacent said opening adapted to accommodate a gasket, a gasket in said recess adapted to engage one end of said pipe, an outwardly extending member formed integral with the body and extending longitudinally of the same, said member being formed to provide an arcuate slot of limited circumferential length and having a center coincident with the center of the adjacent pipe, a clamp ring adapted to be secured to said adjacent end of the pipe, a lug on said clamp ring adapted to be positioned in said slot to lock the pipe against longitudinal movement, a recess formed in said member, said recess being in communication with said slot and facing said opening in said body, a lip formed on said lug and adapted to engage said recess to lock the pipe against rotational movement.

3. In a pipe coupling, a body, a flow passage through said body, a pair of openings in opposite ends of said body adapted to receive the ends of 6 adjacent sections of irrigation pipe, the first of said openings having a substantially larger diameter than the outer diameter of the pipe connected thereto, the second of said openings having a slightly larger diameter than the outer diameter of the pipe connected thereto, a pair of annular recesses in said housing adjacent said openings and adapted to accommodate a pair of gaskets in said recesses, said gaskets being 2 provided with inwardly extending lips adapted to engage the ends of said gaging base formed integral jacent to said substantially extending longitudinally of the body, said base being formed to provide an arcuate open-ended slot having a center coincident with the center of the adjacent pipe, a clamp ring adapted to be secured to the adjacent end or the pipe, a lug on said clamp ring which by turning of the pipe is adapted to be positioned in said slot to lock the pipe against longitudinal movement, a recess formed in said base, said recess being in communication with said slot and facing said substantially larger opening in said body, a lip formed on said lug adapted to engage said recess to lock the pipe against rotational movement, an outwardly extending member formed integral with the body and adjacent said slightly larger opening, said member being formed to provide an arcuate slot of limited circumferential length and having a center coincident with the center of the adjacent pipe, a clamp ring adapted to be secured to said adjacent end of the pipe, a lug on said clamp ring adapted to be positioned in said slot to lock the adjacent pipe against longitudinal movement, a recess formed in said member, said recess being in communication with said slot and facing said slightly larger opening in said body, a lip formed on said lug and adapted to engage said last named recess to lock the adjacent pipe against rotational movement.

pipes, a ground enwith said body adlarger opening and PETER F. DRAGON.

References Cited in the file of this patent UNITED STATES PATENTS Number 

